Flash Flood Warning 40, NWS Las Vegas, NV

000 
TTAA00 KLAS 150417 COR
FFWLAS
NVC003-150515-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING...CORRECTED
NATIONAL WEATHER SERVICE LAS VEGAS NV
916 PM PDT WED JUL 14 1999


*  FLASH FLOOD WARNING FOR
   ALL OF CLARK COUNTY IN SOUTHERN NEVADA

*  UNTIL 1015 PM PDT

*  SOME LOCATIONS AFFECTED
   MOAPA
   THE LAKE MEAD NATIONAL RECREATION AREA
   OVERTON
   LOGANDALE
   VALLEY OF FIRE

*  MODERATE TO HEAVY RAIN ASSOCIATED WITH STRONG THUNDERSTORMS
   HAS MOVED OVER PORTIONS OF EASTERN CLARK COUNTY. ANY RAIN FROM
   THESE STORMS WILL LIKELY BE RUNOFF DUE TO PAST RAINFALL THE LAST
   SEVERAL DAYS. THE MOST EFFICIENT RAIN PRODUCING STORMS AT 9
   PM WERE BETWEEN VALLEY OF FIRE AND NORTH LAS VEGAS AIRPORT.

THIS WARNING IS AN EXPANSION OF THE PREVIOUS WARNING...AND INCLUDES
ALL OF CLARK COUNTY...INCLUDING THE LAS VEGAS VALLEY.

AREA RESIDENTS SHOULD MONITOR FLOOD CONDITIONS... AND BE PREPARED
TO MOVE TO HIGHER GROUND... SHOULD FLOOD WATERS THREATEN. IF FLASH
FLOODING IS OBSERVED... ACT QUICKLY. MOVE TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

CORDERO

MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
245 PM PDT WED JUL 14 1999

SYNOPSIS...A DRIER WESTERLY FLOW ALOFT WILL CONTROL THE WEATHER
THROUGH MOST OF THE NEXT TWO DAYS. HOWEVER...ANOTHER DISTURBANCE OVER
CENTRAL NEVADA WILL MOVE SOUTHEAST OVERNIGHT SPREADING ANOTHER CHANCE
OF SHOWERS AND THUNDERSTORMS TO THE MOJAVE DESERT AFTER MIDNIGHT.
THURSDAY AND FRIDAY WILL BE DRIER WITH ONLY ISOLATED THUNDERSTORMS
ACROSS THE DESERT WITH A FEW MORE STORMS IN THE MOUNTAINS OF EXTREME
SOUTHERN NEVADA AND ALL OF NORTHWEST ARIZONA.

DISCUSSION...INTERESTING AFTERNOON WITH ISOLATED STRONG THUNDERSTORMS
AROUND OUR EDGES. STORMS STARTED TO FIRE IN EXTREME SRN NV BUT ARE
NOW BEING SUPPRESSED ON BACKSIDE OF SWRN UT SHORTWAVE. STORMS MOVING
AT A FAST ENOUGH CLIP AS EXPECTED AND WILL HAVE TO CANCEL THE FLASH
FLOOD WATCH FOR NW AZ WITH AFTERNOON PACKAGE ISSUANCE. NOW CONCERN
OR AT LEAST INTEREST TURNS TO THE NORTH WHERE ANOTHER SHORTWAVE IS
MOVING SE INTO CENTRAL NV. STRONG THUNDERSTORMS ASSOCIATED WITH THIS
SYSTEM IN ESMERALDA AND PORTIONS OF NRN INYO COUNTY. MSO-ETA SHOWS
NICE COUPLET DEVELOPING WITH THIS SYSTEM AS IT MOVES INTO EXTREME SRN
NV AFT 06Z. WILL FORECAST ANOTHER NIGHTTIME EVENT FOR LAS VEGAS AND
SURROUNDING AREA AS MSO-ETA DEVELOPS WIDESPREAD SHOWERS ACROSS THE
AREA. STORM MOTION SHOULD BE SWIFT ENOUGH TO AVOID ANY FLOODING
PROBLEMS BUT BRIEF HEAVY RAIN CANT BE RULED OUT IN ISOLATED LOCALES
OF SRN NV OR NW AZ OVERNIGHT.

MODELS DIVERGE SIGNIFICANTLY AFTER TONIGHT AS NGM AND AVN DRY AIRMASS
OUT AND ETA SHOWS NO DRYING TREND...AT LEAST IN THE SOUTH. BELIEVE IT
WILL BE A LITTLE DRIER BUT NOT AS DRY AS NGM AND AVN INDICATE. WILL
KEEP CHANCE POPS IN NW AZ THROUGH FRIDAY AND ISOLATED POPS ELSEWHERE
THROUGH AT LEAST THURSDAY. THE MID CREW MAY HAVE TO REEXAMINE THIS
AND REINTRODUCE POPS IF NECESSARY FOR FRIDAY. THIS WILL ALSO AFFECT
THE EXTENDED AS WILL GO DRY SATURDAY AND SUNDAY AND THEN REINTRODUCE
THUNDERSTORMS DAY 5 AS UPPER HIGH MOVES WWD AGAIN TOWARD THE 4-
CORNERS.  SKRBAC

.LAS...NONE.